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Signals of selectio...
Signals of selection and ancestry in independently feral Gallus gallus populations
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- Gering, E. (author)
- Nova Southeastern Univ, FL USA
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- Johnsson, Martin (author)
- Linköpings universitet,Biologi,Tekniska fakulteten,Swedish Univ Agr Sci, Sweden,AVIAN Behavioural Genomics and Physiology Group
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- Theunissen, Doortje (author)
- Linköpings universitet,Ekologisk och miljövetenskaplig modellering,Tekniska fakulteten,AVIAN Behavioural Genomics and Physiology Group
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- Martin Cerezo, Maria Luisa (author)
- Linköpings universitet,Biologi,Tekniska fakulteten,AVIAN Behavioural Genomics and Physiology Group
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- Steep, A. (author)
- Michigan State Univ, MI USA
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- Getty, T. (author)
- Michigan State Univ, MI USA
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- Henriksen, Rie (author)
- Linköpings universitet,Ekologisk och miljövetenskaplig modellering,Tekniska fakulteten,AVIAN Behavioural Genomics and Physiology Group
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- Wright, Dominic (author)
- Linköpings universitet,Biologi,Tekniska fakulteten,AVIAN Behavioural Genomics and Physiology Group
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Molecular Ecology. - : WILEY. - 0962-1083 .- 1365-294X.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Recent work indicates that feralisation is not a simple reversal of domestication, and therefore raises questions about the predictability of evolution across replicated feral populations. In the present study we compare genes and traits of two independently established feral populations of chickens (Gallus gallus) that inhabit archipelagos within the Pacific and Atlantic regions to test for evolutionary parallelism and/or divergence. We find that feral populations from each region are genetically closer to one another than other domestic breeds, despite their geographical isolation and divergent colonisation histories. Next, we used genome scans to identify genomic regions selected during feralisation (selective sweeps) in two independently feral populations from Bermuda and Hawaii. Three selective sweep regions (each identified by multiple detection methods) were shared between feral populations, and this overlap is inconsistent with a null model in which selection targets are randomly distributed throughout the genome. In the case of the Bermudian population, many of the genes present within the selective sweeps were either not annotated or of unknown function. Of the nine genes that were identifiable, five were related to behaviour, with the remaining genes involved in bone metabolism, eye development and the immune system. Our findings suggest that a subset of feralisation loci (i.e. genomic targets of recent selection in feral populations) are shared across independently established populations, raising the possibility that feralisation involves some degree of parallelism or convergence and the potential for a shared feralisation 'syndrome'.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- adaptive evolution; feralisation; invasion biology; population genomics
Publication and Content Type
- ref (subject category)
- art (subject category)
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